Afo's don't work for my foot problem. Are there other orthotic solutions?

See the specialist. Ankle foot orthosis the term afo., most likely you have foot drop, being treated with special braces, recomended by your physician , if the current afo prothesis is not helping, consult an orthotist for better fitting.
More info. What is your condition? Afo's can be used for many reasons- there are other options, but need to know what your specific diagnosis is (ex. Drop foot).